1 x 168, 2 x 84, 3 x 56, 4 x 42, 6 x 28, 7 x 24, 8 x 21, 12 x 14
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No. In order for two factors (i.e. two numbers multiplied together) to result in an even number, at least one of the factors must be even. Except for "2" all prime numbers by definition must be odd numbers. 168/2 = 84. 84 is not prime. Therefore you are looking for 2 odd factors of 168. But this is a fruitless search as 2 odd numbers multiplied together will never result in an even number.
312
21 and 5
2 and 11